$(document).ready(function() {
	$(".login_btn").click(function() {
		$("#login_form").validate({
			rules: {
				username: "required",
				password: {
					required: true,
					minlength: 1
				},
			},
			messages: {
				username: "请输入用户名123",
				password: {
					required: "请输入密码",
					minlength: "密码长度必须超过1位"
				},
			}
		});
	});
});